Latch.



J. A. GIESE.

LATCH.

APPLIUATION FILED MAY 14, 1906.

Patented July 6,1909.

Jamey I l 8; I

W m 5, 7% jar Z UNITED STATES PATENT ()FFICE.

JAMES A. GIESE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & WESTLAKE COMPANY,

A CORPORATION OF ILLINOIS.

LATCH.

Specification of Letters Patent.

Patented July 6, 1909.

operative with either right or sit hand keepers. Such latches, while serviceable in many situations, are especially intended for use 1n connection with the swinging partition employed in motor cars for closing in the motormans closet or for opening it for use by passengers when not required in driving the car.

The object of the invention is to simplify and increase the efficiency of latches of this character; and it consists, broadly, in a rotatable bolt, and more specifically in various details of construction as hereinafter described and as illustrated in the accompanying drawings, in Which Figure 1 is an interior view of the latch casing, some of the parts being shown in section; Fig. 2 is a sectional view on the line 22 of Fig. 1. Figs. 3 and 4 are pers ectives of the roll-backs used in the latch; ig. 5 is a perspectiveof one of the latch handles; Figs. 6, 7 and 8 are details of the several forms of kee ers with which the latch may be used; an Fig. 9 is a conventional representation of the manner of mountin the swinging door or partition upon whic the latch is to be used.

a The latch is housed in a suitable casing comprising the side plates 10, 11, and the face or edge plate 12 which may be integral with one of the side plates. A plurality of spacing posts, as 13, 14, rise from the side p ates, as shown these posts being sectional, one section rising from each plate, and suitable screws, as indicated at 15, enter these posts through one of the side plates and unite their sections,.thus securing the latch casing together.

The bolt 16 is cylindrical in form and apertured from one end to fit upon a post 17 rojecting through a suitable aperture in the ace plate 12, from a carrier plate. This carrier plate is angular in form, comprising one screw and may take a hearing at its inner end on the plate 18, but preferably, as shown, is not in actual contact therewith. The leaf 19 of the carrier plate is longitudinally slotted to engage a palr of guide posts 21, 22, rlslng from the plate 10. These posts are aimed parallel with the face plate 12, thereby providing for vertical movement of the bolt and carrier plate. A retractile spring 23 reacts between the lower post 22 and a stud 24 formed on the u per end of the carrier plate, this spring holdlng the bolt at the lower end of its path of movement.

A pair of ri ht and left hand keepers, 25, 26, are secured to door casings, as 27, 28, at the opposite limits of the travel of the door or partition on which the latch is to be used, these keepers being provided with inclined striker plates 29, 30, on which the bo t 16 may freely roll, the sockets 31, 32, of the keepers being so formed as to retain-the bolt agamst. frictional dislodgment.

The bolt is preferably controlled by a pair of independently operating handles 33, 34,

suitably secured to the plates 10 and- 11 and having angular stems 35, 36, for engaging the sockets of the roll-backs 37, 38. As shown, the handles are secured in the plates 10, 11, by threads, represented at 39, the handles turning in these threads during the limited movement incident to the raisin of the bolt. The roll-backs 37, 38, are, genera ly s eaking, of usual form, each being provide w1th a socketed hub to receive the spindle of the handle and having wings 40, 41, 42, 43, for

raising the bolt. The plate 19 is provided with a rearwardly extending arm 44, having bearing faces 45, 46, for engagement with the win s of the roll-backs. The hub 47 of the rollack 38, and which cooperates with the handle 34, is counterbored at its inner end to receive the reduced end of the hub of the rollback 37, the two hubs being in rotative enga ement, thereby permitting each roll-back to Te actuated independently of the other.

A look is provided for controlling the handle 33, and consists of a key-controlled bolt 49, having a shoulder 50, movable into ena ement with a stem 51 depending from the u of the roll-back 37, thereby reventing the oscillation of the roll-back. T is locking bolt 49 reciprocates over the inner face of the plate 10 and is guided by a pair of studs. 52, 53, rising therefrom and engaging suitable slots in the bolt. The bolt is thrown by means of a suitable key, not shown, which may be inserted through either of the keyholes 54 or 55, one in each of the side plates. The locking bolt 49 is held in either of its positions by means of an oscillating tumbler 56, pivoted u on the stud 53 and seated upon the face 0 the bolt 49. The tumbler 56 is apertured, as shown at 57, to receive a stud 58 ro'ecting from the face of the bolt 49, an a etent 59, carried by the tumbler, projects into the aperture 57, crossing the path of the stud 58 and thus securing the bolt against movement from either of its extreme positions. The tumbler is normally held, by means of a spring 60, in such position as to bring its detent into engagement with the stud 58.

Assumin the arts to be in the position as represente in i 1, the key, inserted through the keyho e and turned, will first move the tumbler 56 upwardly until its detent 59 is out of enga ement with the stud 58 and then, enterin t e notch 61 in the bolt 49, carries the bot to the left, bringing its shoulder 50 into engagement with the stem 51 of the roll-back. As the key is further turned the tumbler is allowed to descend,

used and may be secured in place by screws enterin the studs 52, 53.

Shou d it be desired to employ the latch on what is known as a swinging door, that is to say, one which opens in both directions, a double lipped keeper 63, as shown in Fig. 8, will be employed.

I claim as my invention-- 1. In a latch, in combination, a vertically reciprocable angle plate having a post pro-455 jectlng from one leaf, a hollow cylindrical latch-member rotatably mounted on the 0st, and means acting upon the other leaf or reciprocating the angle plate.

2. In a latch, in combination, a vertically reciprocable angle plate having a post projecting from one leaf and an armprojectin from the other leaf, a hollow 'cylindrica latch-member rotatably mounted on the post, and a roll-back acting on the arm of the plate to raise it.

JAMES A. GIESE. Witnesses:

LoUIs K. GILLSON, E. M. KLA'roHEm 

